Improvement in lamps



UNITED STATES PATENT OFFICE.

JOsErn s. WOOD, OE BROOKLYN, NEW YORK.

IMPROVEMENT IN LA MPS.

Specification forming part of Letters 'Patent No. 149,557. dated April7, 1874; application filed October 9, 1873.

To all whom it may conce-rn:

Be it known that I, J osEPH S. WOOD, of Brooklyn, Kings county, State ofNew York, have invented certain Improvements in Pneu-l` maticSafetyllamps, of which the following is a specification;

The nature of my invention consists in constructin g lamps in threedistinct air-tight chambers, one above the other. The bowl or upperchamber contains the water, the second or middle to contain the oil, andthe bottom or lower chamber contains the air; also, the manner ofconnecting the upper water-reservoir with the lower or air chamber, witha pipe for the passage of Water into the lower chamber to create apressure of air, also, connecting the oil-chamber with pipes through thewaterreservoir, 'and in connection with the burner.

To enable others skilled in the art to make and use myinvention, I willproceed to describe its construction and operation, refer ence being hadto the accompanying drawings.

Figure l is a vertical section of the lampgfor burning light oils, andusing generating-vapor burners of any description.

A is the bowl or top chamber of the lamp for holding the water, and isconnected with the lower chamber O by the circulating-pipe E. B is themiddle or oil-chamber, connected With the air-chamber O by the pipe F. Ois the air-pressure chamber. D is the oil-pipe. E is the Water-pipe. Fis the air-pipe. Gr is the inside oil-tube in D for keeping the oil frombeing chilled in vcold weather, also forming an H is the I is theilling-screw for J is the dischargescrew for waste wayThe Water passesdown pipe E into the air chamber O. When suflicient passes down it seatsthe mouth of pipe E, and creates a pressnre ot' air in chamber O, whichpasses up pipe F into chamber B, and forces the oil up pipe D and G,which acts as an air-cushion for steadying the alne. The pipe D keepingthe oil-pipe G from contact with the cold water in reservoir A, when theburner, valve, or cock is opened, and the oil is allowed to HOW to thepoint of combustion through pipes D and G, as fast as the oil isconsumed the air occupies its place in chamber B, the oil being forcedt0 the point of combustion by atmospheric pressure sustained by a columnof Water.

, What I claim as my invention, and desire to secure by Letters Patent,is

rlhe combination of the chambers A, B, and

O, and the pipes D, E, F, and G, for the purpose shown and described.

JOSEPH S. WOOD.

Witnesses:

J. E. ROBINSON, WM. D. BLACK.

